FITMENT
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2013-2018 6.7L Dodge Ram Cummins 2500 / 3500 Turbo Diesel.
- Does NOT fit trucks equipped with factory Rear Air Suspension or commercial Cab & Chassis (4500/5500) models.
DESCRIPTION
Product Overvie
- The 2013–2018 Dodge Ram 6.7L Cummins comes restricted from the factory by a massive emissions mid-section containing a DPF, catalytic converter, and SCR (DEF) system. These heavy components trap extreme thermal heat, trigger frequent fuel-wasting regens, and choke backpressure right behind your turbo.
- The 4" DPF & SCR Delete Race Pipe is the ultimate high-flow mid-section solution. Constructed from smooth, mandrel-bent 4" T409 SS, this straight race pipe replaces all restrictive mid-body emissions units. By opening up the exhaust pathway, it sharply drops EGTs under load, improves throttle response, boosts fuel economy, and restores that unmistakable Cummins diesel rumble.
Key Features
- Premium T409 Stainless Steel: Mandrel-bent 4-inch T409 stainless steel tubing built to withstand extreme thermal stress, road salt, and long-term corrosion.
- Maximum EGT Reduction: Flushes out trapped heat right behind the downpipe section, allowing exhaust gases to exit instantly to sharply drop EGTs under heavy towing.
- Kill Active Regens & DEF Errors: Permanently eliminates fuel-wasting DPF regeneration cycles and DEF system dependence to improve MPG and prevent crankcase oil dilution.
- Complete DP-Back Airflow: Replaces everything behind the factory downpipe—deleting the restrictive catalytic converter, DPF, SCR (DEF), and OEM muffler.
FAQ
Q: What is the main difference between a Downpipe-Back pipe and a Turbo-Back system?
A: A Downpipe-Back system replaces all exhaust piping and emissions components behind your factory downpipe (retaining your OEM downpipe). A Turbo-Back system replaces the downpipe itself as well, connecting directly to the turbocharger turbine housing.
Q: Will this downpipe-back system connect directly to my factory downpipe and rear tailpipe?
A: Yes. It features precision-flanged and expanded connections engineered to bolt straight up to your factory downpipe outlet and extend through to your OEM rear tailpipe section.
Q: Does removing the DPF and SCR increase soot in my engine oil?
A: No, it actually reduces it. Deleting active regeneration cycles stops raw diesel fuel from leaking past piston rings into your crankcase, keeping your engine oil cleaner for longer and extending bearing life.
Q: What is the sound profile of a 4" downpipe-back race pipe on a 6.7L Cummins?
A: It yields a clean, deep diesel rumble at idle and a distinct, sharp VGT turbo spool whistle under heavy acceleration, without creating unmanageable cabin drone at highway speeds.
